|Entitled "Meitantei Conan"
This series originally aired in Japan in 1996. It is about a 17 year old detective named Shinichi who, when investigating some suspicious happenings, was knocked unconsious and given a drug which was intended to kill him. Instead, it changed Shinichi into a child. Knowing that his very existance could endanger his friends and family, he changed his name to Conan and got permission from his girlfriend's family to live with them. Now that he is just a kid, he has to act like one. He goes to grade school, and does other kid things, while at the same time tries to find out who hit and changed him into what he is now.